Marie Tharp: Mapping the Seafloor of Back-Arc Basins, Mid-Ocean Ridges, Continental Margins & Plate Boundaries Vienna (Austria), EGU 2020-3676, 7/5/2020
A Tribute to Marie Tharp: Mapping the seafloor of back-arc basins, mid-ocean ridges, continental margins & plate boundaries Vienna (Austria), EGU 2020-3676, 7/5/2020 Eulàlia Gràcia, Sara Martínez Loriente, Susana Diez, Laura Gómez de la Peña*, Cristina S. Serra, Rafael Bartolome, Valentí Sallarès, Claudio Lo Iacono, Hector Perea**, Roger Urgeles, Ingo Grevemeyer* and Cesar R. Ranero B-CSI at Institut de Ciències del Mar – CSIC, Barcelona *GEOMAR, Kiel, Germany **Universidad Complutense de Madrid, Facultad de Geologia, Madrid 1 The first steps of Marie Tharp • Marie Tharp, July 30, 1920 (Ypsilanti, Michigan) – August 23, 2006 (Nyack, New York) was an American geologist & oceano- graphic cartographer who, in partnership with Bruce Heezen, created the first scientific map of the Atlantic Ocean floor. • Tharp's work revealed the detailed topography and multi-dimensional geographical landscape of the ocean bottom. • Her work revealed the presence of a continuous rift-valley along the axis Fig. 1. A young Marie in the field helping his father, William E. of the Mid- Atlantic Ridge, causing a Tharp, a soil surveyor for United States Dpt. of Agriculture. Marie often paradigm shift in Earth Sciences that helped him with this task, which gave her an introduction to map- led to acceptance of Plate Tectonics making. From book “Soundings” by Hali Felt (2012). and Continental Drift. 2 Working at Columbia University Lamont Geological Observatory (NY) Fig. 2. Marie Fig. 3. at streets of Bruce New York, Heezen after she looking at a was hired to fathogram work by Dr. being Maurice produced by Ewing’, at an early the newly- echosounder formed (year 1940).
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